You can periodically thoroughly clean pearl earrings, rings, pendants and brooches in a very mild Resolution built especially for the cleaning of pearls; even so, do not immerse pearl strands or bracelets straight https://www.ebay.com.au/str/pacificpearlsinternational?mkcid=1&mkrid=705-53470-19255-0&siteid=15&campid=5339072275&customid=&toolid=10001&mkevt=1